/* ============================================================
   piyushgrover.com — main stylesheet
   Static rebuild: dark-first theme, restrained fintech palette.
   ============================================================ */

/* ---------- Fonts (self-hosted) ---------- */
@font-face {
  font-family: 'Archivo VF';
  src: url('../fonts/Archivo-var.woff2') format('woff2-variations');
  font-weight: 100 900;
  font-stretch: 62% 125%;
  font-display: swap;
}
@font-face {
  font-family: 'Plex Mono';
  src: url('../fonts/PlexMono-400.woff2') format('woff2');
  font-weight: 400;
  font-display: swap;
}
@font-face {
  font-family: 'Plex Mono';
  src: url('../fonts/PlexMono-500.woff2') format('woff2');
  font-weight: 500;
  font-display: swap;
}

/* ---------- Theme tokens ---------- */
:root {
  --font-display: 'Archivo VF', 'Helvetica Neue', sans-serif;
  --font-body: 'Archivo VF', 'Helvetica Neue', sans-serif;
  --font-mono: 'Plex Mono', 'SF Mono', Menlo, monospace;

  --bg: #0b0c0e;
  --bg-elev: #121418;
  --text: #e9e7e2;
  --text-muted: #91959d;
  --line: rgba(233, 231, 226, 0.14);
  --line-soft: rgba(233, 231, 226, 0.07);
  --accent: #6c92ff;
  --accent-ink: #0b0c0e;
  --card: #15171c;
  --scrim: rgba(11, 12, 14, 0.72);

  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 2rem;
  --space-4: 3.5rem;
  --space-5: 6rem;
  --space-6: 9rem;

  --w-max: 1320px;
  --pad-x: clamp(1.25rem, 4vw, 3.5rem);
  --radius: 14px;

  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  color-scheme: dark;
}

html[data-theme='light'] {
  --bg: #f2f1ed;
  --bg-elev: #ffffff;
  --text: #17191d;
  --text-muted: #63676e;
  --line: rgba(23, 25, 29, 0.16);
  --line-soft: rgba(23, 25, 29, 0.07);
  --accent: #2f5ce0;
  --accent-ink: #ffffff;
  --card: #ffffff;
  --scrim: rgba(242, 241, 237, 0.78);
  color-scheme: light;
}

/* ---------- Reset / base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-variation-settings: 'wght' 420, 'wdth' 100;
  font-size: 1rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  transition: background-color 0.45s ease, color 0.45s ease;
  overflow-x: clip;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: none; cursor: pointer; padding: 0; }
h1, h2, h3, h4 { font-family: var(--font-display); font-variation-settings: 'wght' 650, 'wdth' 94; line-height: 1.05; margin: 0 0 0.6em; font-weight: 650; letter-spacing: -0.015em; }
p { margin: 0 0 1em; }
ul { padding-left: 1.2em; margin: 0 0 1.2em; }
li { margin-bottom: 0.35em; }
::selection { background: var(--accent); color: var(--accent-ink); }

/* Custom cursor active: hide native cursor on fine pointers */
@media (hover: hover) and (pointer: fine) {
  body.has-cursor, body.has-cursor a, body.has-cursor button { cursor: none; }
}

.wrap { max-width: var(--w-max); margin: 0 auto; padding-inline: var(--pad-x); }

/* Skip link — first tab stop, so keyboard users can bypass the nav on every
   page. Off-screen until focused rather than display:none, which would take
   it out of the tab order entirely. */
.skip-link {
  position: fixed;
  top: 0; left: 50%;
  transform: translate(-50%, -120%);
  z-index: 200;
  background: var(--accent);
  color: var(--accent-ink);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.85rem 1.4rem;
  border-radius: 0 0 var(--radius) var(--radius);
  transition: transform 0.2s var(--ease-out);
}
.skip-link:focus { transform: translate(-50%, 0); }
#main:focus { outline: none; }

/* ---------- Typography scale ---------- */
.display-xl { font-size: clamp(2.4rem, 6.4vw, 6.6rem); line-height: 1.0; letter-spacing: -0.03em; }
.display-lg { font-size: clamp(2.2rem, 5.5vw, 4.6rem); letter-spacing: -0.025em; }
.display-md { font-size: clamp(1.6rem, 3.4vw, 2.6rem); }
.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--text-muted);
  margin-bottom: var(--space-2);
}
.lede { font-size: clamp(1.05rem, 1.6vw, 1.35rem); color: var(--text-muted); max-width: 46ch; }
.muted { color: var(--text-muted); }

/* ---------- Header ---------- */
.site-head {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 60;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.1rem var(--pad-x);
  transition: background-color 0.3s ease, backdrop-filter 0.3s ease, transform 0.4s var(--ease-out);
}
.site-head.scrolled {
  background: var(--scrim);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line-soft);
}
.site-head.hidden { transform: translateY(-110%); }
.brand {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.05rem;
  letter-spacing: -0.01em;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}
.brand img { width: 30px; height: 30px; border-radius: 50%; }
.nav-links { display: flex; gap: 2rem; align-items: center; }
.nav-links a {
  font-size: 0.92rem;
  color: var(--text-muted);
  transition: color 0.25s ease;
  position: relative;
  /* WCAG 2.2 target size: pad to 24px tall without changing the type scale */
  display: inline-flex;
  align-items: center;
  min-height: 24px;
}
.nav-links a:hover, .nav-links a[aria-current='page'] { color: var(--text); }
.nav-links a[aria-current='page']::after {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: 1px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
}
.head-actions { display: flex; align-items: center; gap: 1rem; }

/* Theme toggle */
.theme-toggle {
  width: 38px; height: 38px;
  display: grid; place-items: center;
  border: 1px solid var(--line);
  border-radius: 50%;
  transition: border-color 0.25s ease, transform 0.25s ease;
}
.theme-toggle:hover { border-color: var(--text); transform: rotate(15deg); }
.theme-toggle svg { width: 17px; height: 17px; fill: none; stroke: currentColor; stroke-width: 1.6; }
html[data-theme='dark'] .theme-toggle .icon-sun { display: block; }
html[data-theme='dark'] .theme-toggle .icon-moon { display: none; }
html[data-theme='light'] .theme-toggle .icon-sun { display: none; }
html[data-theme='light'] .theme-toggle .icon-moon { display: block; }

/* Mobile menu button */
.menu-btn { display: none; width: 38px; height: 38px; place-items: center; border: 1px solid var(--line); border-radius: 50%; z-index: 75; position: relative; }
.menu-btn span, .menu-btn span::before, .menu-btn span::after {
  content: '';
  display: block;
  width: 16px; height: 1.8px;
  background: currentColor;
  position: relative;
  transition: transform 0.3s var(--ease-out), top 0.3s var(--ease-out);
}
.menu-btn span::before { position: absolute; top: -5px; }
.menu-btn span::after { position: absolute; top: 5px; }
body.menu-open .menu-btn span { background: transparent; }
body.menu-open .menu-btn span::before { top: 0; transform: rotate(45deg); }
body.menu-open .menu-btn span::after { top: 0; transform: rotate(-45deg); }

/* Mobile menu overlay */
.menu-overlay {
  position: fixed; inset: 0; z-index: 70;
  background: var(--bg);
  display: flex; flex-direction: column; justify-content: center;
  padding: var(--pad-x);
  clip-path: inset(0 0 100% 0);
  transition: clip-path 0.55s var(--ease-out);
  visibility: hidden;
}
body.menu-open .menu-overlay { clip-path: inset(0 0 0% 0); visibility: visible; }
body.menu-open { overflow: hidden; }
body.menu-open .site-head { z-index: 80; background: transparent; -webkit-backdrop-filter: none; backdrop-filter: none; border-bottom: none; }
.menu-overlay a.menu-link {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 10vw, 4rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  padding: 0.35rem 0;
  color: var(--text);
  display: flex; align-items: baseline; gap: 1rem;
}
.menu-overlay a.menu-link small { font-size: 0.9rem; color: var(--text-muted); font-family: var(--font-body); }
.menu-overlay .menu-socials { margin-top: var(--space-4); display: flex; gap: 1.6rem; color: var(--text-muted); font-size: 0.9rem; }
/* These sat at 23.75px — just under the 24px target minimum, and they're the
   touch-first copy of the nav, so they matter more than the desktop links. */
.menu-overlay .menu-socials a { display: inline-flex; align-items: center; min-height: 28px; }

/* ---------- Preloader (home) ---------- */
.preloader {
  position: fixed; inset: 0; z-index: 100;
  background: var(--bg);
  display: flex; align-items: flex-end; justify-content: space-between;
  padding: var(--pad-x);
  overflow: hidden;
}
.preloader .pre-name {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(3rem, 14vw, 12rem);
  line-height: 0.9;
  letter-spacing: -0.04em;
  margin: 0;
}
.preloader .pre-count {
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 3vw, 2rem);
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
}

/* ---------- Custom cursor ---------- */
.cursor-dot, .cursor-ring {
  position: fixed; top: 0; left: 0; z-index: 200;
  pointer-events: none;
  border-radius: 50%;
  will-change: transform;
}
.cursor-dot {
  width: 6px; height: 6px;
  background: var(--accent);
  transform: translate(-50%, -50%);
}
.cursor-ring {
  width: 34px; height: 34px;
  border: 1.5px solid var(--accent);
  opacity: 0.55;
  display: grid; place-items: center;
  transition: width 0.3s var(--ease-out), height 0.3s var(--ease-out),
              opacity 0.3s ease, background-color 0.3s ease, border-color 0.3s ease;
}
.cursor-ring .cursor-label {
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--accent-ink);
  opacity: 0;
  transition: opacity 0.2s ease;
  white-space: nowrap;
}
.cursor-ring.is-view {
  width: 74px; height: 74px;
  background: var(--accent);
  border-color: var(--accent);
  opacity: 1;
}
.cursor-ring.is-view .cursor-label { opacity: 1; }
.cursor-ring.is-link { width: 48px; height: 48px; opacity: 0.9; }
.cursor-dot.is-hidden, .cursor-ring.is-hidden { opacity: 0; }
@media (hover: none), (pointer: coarse) {
  .cursor-dot, .cursor-ring { display: none; }
}

/* ---------- Hero (home) ---------- */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex; flex-direction: column; justify-content: center;
  padding-top: clamp(6rem, 14vh, 9rem);
  padding-bottom: clamp(3rem, 8vh, 6rem);
  gap: clamp(1.4rem, 3vh, 2.4rem);
}
#hero-canvas {
  position: absolute; inset: 0; z-index: -1;
  width: 100%; height: 100%;
}
.hero-fallback {
  position: absolute; inset: 0; z-index: -2;
  background:
    radial-gradient(60% 50% at 72% 30%, color-mix(in srgb, var(--accent) 16%, transparent), transparent 70%),
    var(--bg);
}
.hero .hero-eyebrow { display: flex; align-items: center; gap: 0.7rem; }
.hero h1 { max-width: 11ch; margin-bottom: 0.4em; }
.hero .hero-cta-row { display: flex; align-items: center; gap: 1.6rem; margin-top: var(--space-3); flex-wrap: wrap; }
@media (max-width: 760px) { .hero .scroll-hint { display: none; } }
.hero .scroll-hint {
  position: absolute;
  right: var(--pad-x);
  bottom: clamp(4rem, 9vh, 7rem);
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-muted);
  writing-mode: vertical-rl;
}

/* Buttons */
.btn {
  display: inline-flex; align-items: center; gap: 0.6rem;
  padding: 0.85rem 1.7rem;
  border-radius: 99px;
  border: 1px solid var(--line);
  font-size: 0.92rem;
  font-weight: 550;
  transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease, transform 0.3s var(--ease-out);
}
.btn:hover { transform: translateY(-2px); }
.btn-solid { background: var(--text); color: var(--bg); border-color: var(--text); }
.btn-solid:hover { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn-ghost:hover { border-color: var(--text); }
.btn .arr { transition: transform 0.3s var(--ease-out); }
.btn:hover .arr { transform: translateX(4px); }

/* ---------- Marquee ---------- */
.marquee {
  overflow: hidden;
  border-block: 1px solid var(--line-soft);
  padding-block: 0.65rem;
  user-select: none;
}
.marquee-track {
  display: flex; gap: 2.4rem;
  width: max-content;
  animation: marquee 28s linear infinite;
}
.marquee-track span {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-muted);
  white-space: nowrap;
  display: flex; align-items: center; gap: 2.4rem;
}
.marquee-track span::after { content: '✳'; color: var(--accent); font-size: 0.9em; }
@keyframes marquee { to { transform: translateX(-50%); } }
@media (prefers-reduced-motion: reduce) { .marquee-track { animation: none; } }

/* ---------- Section scaffolding ---------- */
.section { padding-block: var(--space-6); }
.section-head { display: flex; align-items: baseline; gap: 1.4rem; margin-bottom: var(--space-4); }
.section-head .idx {
  font-family: var(--font-display);
  font-size: 0.95rem;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
}
.section-head h2 { margin: 0; }

/* ---------- Project list (home) ---------- */
.project-list { border-top: 1px solid var(--line); }
.project-row {
  display: grid;
  /* minmax(0,…) on the title and tag lets both shrink instead of forcing the
     row wider than the viewport — at 280px the tag was pushing the arrow off */
  grid-template-columns: auto minmax(0, 1fr) minmax(0, auto) auto;
  align-items: center;
  gap: clamp(1rem, 3vw, 2.5rem);
  padding: clamp(1.6rem, 4vw, 2.8rem) 0;
  border-bottom: 1px solid var(--line);
  position: relative;
  transition: padding-left 0.4s var(--ease-out);
}
.project-row:hover { padding-left: 1.2rem; }
.project-row .num {
  font-family: var(--font-display);
  font-size: 0.95rem;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
}
.project-row .p-title {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 4.2vw, 3.2rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  transition: color 0.3s ease;
}
.project-row:hover .p-title { color: var(--accent); }
.project-row .p-tag { font-size: 0.85rem; color: var(--text-muted); text-align: right; }
.project-row .p-arrow { font-size: 1.4rem; color: var(--text-muted); transition: transform 0.35s var(--ease-out), color 0.3s ease; }
.project-row:hover .p-arrow { transform: translate(6px, -6px); color: var(--text); }

/* Floating hover preview */
.project-preview {
  position: fixed;
  z-index: 40;
  width: min(340px, 26vw);
  aspect-ratio: 4 / 3;
  border-radius: var(--radius);
  overflow: hidden;
  pointer-events: none;
  opacity: 0;
  transform: scale(0.9);
  transition: opacity 0.3s ease, transform 0.35s var(--ease-out);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
}
.project-preview img { width: 100%; height: 100%; object-fit: cover; position: absolute; inset: 0; opacity: 0; transition: opacity 0.25s ease; }
.project-preview img.active { opacity: 1; }
.project-preview.visible { opacity: 1; transform: scale(1); }
@media (max-width: 900px) { .project-preview { display: none; } }

/* ---------- Case study layout ---------- */
.cs-hero { padding-top: clamp(8rem, 18vh, 12rem); padding-bottom: var(--space-4); }
.cs-hero h1 { max-width: 16ch; }
.cs-hero .lede { margin-top: var(--space-2); }
.meta-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(180px, 100%), 1fr));
  gap: var(--space-3);
  margin: var(--space-4) 0 0;
  padding-top: var(--space-3);
  border-top: 1px solid var(--line);
}
.meta-grid div dt {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}
.meta-grid div dd { margin: 0; font-size: 0.95rem; line-height: 1.5; }

/* Section divider lives inside the content column (via .wrap), so it never
   runs under the fixed chapter rail. Drawn at the top of each section's wrap. */
.cs-section { padding-block: var(--space-5); position: relative; }
.cs-section > .wrap { position: relative; }
.cs-section > .wrap::before {
  content: '';
  position: absolute;
  top: calc(var(--space-5) * -0.5);
  left: var(--pad-x);
  right: var(--pad-x);
  height: 1px;
  background: var(--line-soft);
}
@media (min-width: 1180px) {
  body.has-rail .cs-section > .wrap::before { left: calc(var(--pad-x) + 240px); }
}
.cs-section .cs-label {
  display: flex; align-items: baseline; gap: 1rem;
  margin-bottom: var(--space-3);
}
.cs-section .cs-label .idx { font-family: var(--font-display); color: var(--accent); font-size: 0.9rem; font-variant-numeric: tabular-nums; }
.cs-section h2 { font-size: clamp(1.7rem, 3.6vw, 2.8rem); max-width: 22ch; }
.cs-section h3 { font-size: clamp(1.15rem, 2vw, 1.45rem); margin-top: var(--space-3); }
.cs-cols { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.4fr); gap: var(--space-4); }
.cs-cols > * { min-width: 0; }
@media (max-width: 820px) { .cs-cols { grid-template-columns: 1fr; gap: var(--space-2); } }
.cs-prose { max-width: 62ch; font-size: 1.02rem; }
.cs-prose li { color: var(--text); }
.cs-prose .callout {
  border-left: 2px solid var(--accent);
  padding: 0.4rem 0 0.4rem 1.2rem;
  margin: var(--space-3) 0;
  font-size: 1.1rem;
  font-family: var(--font-display);
  font-weight: 500;
}

/* Figures */
.fig { margin: var(--space-3) 0 0; }
.fig img, .fig video {
  width: 100%;
  height: auto;
  display: block;
  border-radius: var(--radius);
  border: 1px solid var(--line-soft);
  background: var(--card);
}
.fig figcaption { font-size: 0.82rem; color: var(--text-muted); margin-top: 0.7rem; }
.fig-grid { display: grid; gap: var(--space-2); margin-top: var(--space-3); }
.fig-grid.cols-2 { grid-template-columns: repeat(2, 1fr); }
.fig-grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
@media (max-width: 700px) { .fig-grid.cols-2, .fig-grid.cols-3 { grid-template-columns: 1fr; } }
/* Diagrams and portraits that shouldn't run the full content width — a small
   explanatory diagram blown up to 940px reads as a mistake. Click to expand. */
.fig.fig-narrow, .fig-grid.fig-narrow { max-width: 560px; margin-left: auto; margin-right: auto; }
.fig-grid.cols-2.fig-narrow { max-width: 680px; }

/* Persona cards */
.persona-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(280px, 100%), 1fr)); gap: var(--space-2); margin-top: var(--space-3); }
.persona-card {
  background: var(--card);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  padding: var(--space-3);
}
.persona-card h4 { margin-bottom: 0.2rem; }
.persona-card .p-meta { font-size: 0.85rem; color: var(--text-muted); margin-bottom: 1rem; }
/* Portrait sits with the name it belongs to rather than in a separate slab
   below the cards. Cropped square and biased upward to keep the face centred. */
.persona-head { display: flex; align-items: center; gap: 1rem; margin-bottom: 1.1rem; }
.persona-head .p-meta { margin-bottom: 0; }
.persona-avatar {
  flex: none;
  width: 88px; height: 88px;
  border-radius: var(--radius);
  object-fit: cover;
  object-position: 50% 26%;
  border: 1px solid var(--line-soft);
}
.persona-card ul { margin: 0; padding-left: 1.1em; font-size: 0.92rem; }

/* Design decision cards */
.decision-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(310px, 100%), 1fr));
  gap: var(--space-2);
  margin-top: var(--space-3);
}
.decision-card {
  background: var(--card);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  padding: var(--space-3);
  transition: border-color 0.3s ease, transform 0.35s var(--ease-out);
}
.decision-card:hover { border-color: var(--line); transform: translateY(-4px); }
.decision-card .decision-title {
  font-size: 1.05rem;
  margin-bottom: 1rem;
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
}
.decision-card .decision-title .idx { font-family: var(--font-mono); font-weight: 500; font-size: 0.72rem; color: var(--accent); }
.decision-card .d-row { font-size: 0.92rem; margin-bottom: 0.7rem; color: var(--text-muted); }
.decision-card .d-row.why { color: var(--text); margin-bottom: 0; }
.decision-card .d-tag {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-bottom: 0.25rem;
  color: var(--text-muted);
}
.decision-card .d-row.shipped .d-tag, .decision-card .d-row.shipped { color: var(--text); }
.decision-card .d-row.shipped .d-tag { color: var(--accent); }

/* Case study card (hub page) */
.cs-card-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(280px, 100%), 1fr)); gap: var(--space-3); }
.cs-card {
  display: flex; flex-direction: column;
  background: var(--card);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 0.4s var(--ease-out), border-color 0.3s ease;
}
.cs-card:hover { transform: translateY(-6px); border-color: var(--line); }
.cs-card .cs-card-img { aspect-ratio: 16 / 10; overflow: hidden; }
.cs-card .cs-card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s var(--ease-out); }
.cs-card:hover .cs-card-img img { transform: scale(1.04); }
.cs-card .cs-card-body { padding: var(--space-3); flex: 1; display: flex; flex-direction: column; }
.cs-card h3 { margin-bottom: 0.4rem; font-size: 1.25rem; }
.cs-card p { color: var(--text-muted); font-size: 0.95rem; flex: 1; }
.cs-card .cs-card-link { font-size: 0.9rem; font-weight: 600; color: var(--accent); }

/* Stat band */
.stat-band { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(200px, 100%), 1fr)); gap: var(--space-3); }
.stat-band .stat b {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 5vw, 3.6rem);
  font-weight: 600;
  letter-spacing: -0.02em;
}
.stat-band .stat span { color: var(--text-muted); font-size: 0.92rem; }

/* ---------- Prev / next project nav ---------- */
.pn-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border-top: 1px solid var(--line);
}
.pn-nav a {
  padding: clamp(2.2rem, 6vw, 4rem) var(--pad-x);
  display: flex; flex-direction: column; gap: 0.5rem;
  transition: background-color 0.3s ease;
}
.pn-nav a:hover { background: var(--bg-elev); }
.pn-nav a + a { border-left: 1px solid var(--line); text-align: right; align-items: flex-end; }
.pn-nav .pn-dir { font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.16em; color: var(--text-muted); }
.pn-nav .pn-title { font-family: var(--font-display); font-size: clamp(1.2rem, 3vw, 2rem); font-weight: 600; letter-spacing: -0.02em; }
@media (max-width: 640px) {
  .pn-nav { grid-template-columns: 1fr; }
  .pn-nav a + a { border-left: none; border-top: 1px solid var(--line); }
}

/* ---------- Galleries (playground) ---------- */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-2);
}
.gallery-grid a { border-radius: var(--radius); overflow: hidden; display: block; border: 1px solid var(--line-soft); }
.gallery-grid img { width: 100%; height: 100%; object-fit: cover; aspect-ratio: 1; transition: transform 0.5s var(--ease-out); }
.gallery-grid a:hover img { transform: scale(1.04); }
@media (max-width: 900px) { .gallery-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 520px) { .gallery-grid { grid-template-columns: repeat(2, 1fr); gap: 0.6rem; } }

/* Lightbox */
.lightbox {
  position: fixed; inset: 0; z-index: 90;
  background: rgba(8, 9, 11, 0.92);
  display: grid; place-items: center;
  padding: var(--pad-x);
  opacity: 0; visibility: hidden;
  transition: opacity 0.3s ease;
  overflow: auto;
  overscroll-behavior: contain;
}
/* Two JS-driven classes: .mounted makes it visible and focusable, .open runs
   the fade. Visibility is deliberately not transitioned — a visibility
   transition that never fires (backgrounded tab) leaves an invisible overlay
   on top of the page eating every click. */
.lightbox.mounted { visibility: visible; }
.lightbox.open { opacity: 1; }
.lightbox img { max-height: 86vh; max-width: 100%; width: auto; border-radius: var(--radius); }
/* Tall images scroll instead of shrinking to an unreadable sliver.
   Aligning to the start keeps the top reachable — centred grid items that
   overflow their container clip on the leading edge. */
.lightbox.tall { place-items: start center; padding-block: 4.5rem; }
.lightbox.tall img { max-height: none; max-width: min(1100px, 100%); }
.lightbox .lb-close { position: fixed; top: 1.2rem; right: 1.4rem; color: #fff; font-size: 2rem; line-height: 1; z-index: 1; }
html.lb-open, html.lb-open body { overflow: hidden; }

/* Expandable figures. The custom cursor carries the "Expand" affordance on
   fine pointers, so only show a native zoom cursor when it isn't running. */
body:not(.has-cursor) img.is-zoomable { cursor: zoom-in; }
img.is-zoomable:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

/* ---------- About ---------- */
.about-grid { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr); gap: var(--space-5); align-items: start; }
.about-grid .about-photo img { border-radius: var(--radius); width: 100%; }
@media (max-width: 820px) { .about-grid { grid-template-columns: 1fr; gap: var(--space-3); } }

/* ---------- Footer ---------- */
.site-foot { border-top: 1px solid var(--line); margin-top: var(--space-6); }
.foot-top { display: flex; justify-content: space-between; align-items: flex-start; gap: var(--space-3); padding-block: var(--space-5); flex-wrap: wrap; }
.foot-top .foot-name { font-family: var(--font-display); font-size: clamp(2rem, 6vw, 4.5rem); font-weight: 600; letter-spacing: -0.03em; line-height: 1; }
.foot-top .foot-made { color: var(--text-muted); font-size: 0.9rem; margin-top: 0.8rem; }
.foot-made .heart { color: var(--accent); }
.foot-cols { display: flex; gap: clamp(2rem, 6vw, 6rem); flex-wrap: wrap; }
.foot-cols .foot-col-title { font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.16em; color: var(--text-muted); margin: 0 0 0.9rem; font-family: var(--font-body); }
.foot-cols ul { list-style: none; padding: 0; margin: 0; }
.foot-cols li { margin-bottom: 0.15rem; }
.foot-cols a {
  font-size: 0.92rem; color: var(--text-muted); transition: color 0.25s ease;
  display: inline-flex; align-items: center; min-height: 24px;
}
.foot-cols a:hover { color: var(--text); }
.foot-bottom {
  display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap;
  padding-block: var(--space-2);
  border-top: 1px solid var(--line-soft);
  font-size: 0.8rem; color: var(--text-muted);
}

/* ---------- Case-study chapter rail ---------- */
.cs-rail {
  position: fixed;
  left: calc(max((100vw - var(--w-max)) / 2, 0px) + var(--pad-x));
  top: 130px;
  z-index: 40;
  display: none;
  flex-direction: column;
  gap: 2px;
  width: 200px;
  transition: opacity 0.3s ease;
}
.cs-rail.is-hidden { opacity: 0; pointer-events: none; }
.cs-rail a {
  display: flex;
  gap: 0.6rem;
  align-items: baseline;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--text-muted);
  padding: 0.35rem 0 0.35rem 0.75rem;
  border-left: 2px solid transparent;
  transition: color 0.25s ease, border-color 0.25s ease;
}
.cs-rail a .idx {
  font-family: var(--font-display);
  font-variant-numeric: tabular-nums;
  font-weight: 600;
}
.cs-rail a:hover { color: var(--text); }
.cs-rail a.active { color: var(--accent); border-left-color: var(--accent); }
section[id] { scroll-margin-top: 95px; }
@media (min-width: 1180px) {
  .cs-rail { display: flex; }
  body.has-rail main .wrap { padding-left: calc(var(--pad-x) + 240px); }
}

/* ---------- Reveal animations (GSAP adds .revealed) ---------- */
[data-reveal] { opacity: 0; transform: translateY(28px); }
html.no-js [data-reveal], [data-reveal].revealed { opacity: 1; transform: none; }
/* The preloader is torn down by JS, so without JS it would sit over the page
   forever. Same reason [data-reveal] needs the no-js escape hatch above. */
html.no-js .preloader { display: none; }
@media (prefers-reduced-motion: reduce) {
  [data-reveal] { opacity: 1; transform: none; }
}

/* ---------- Easter eggs ---------- */
.egg-toast {
  position: fixed;
  left: 50%;
  bottom: 28px;
  transform: translate(-50%, 16px);
  z-index: 310;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--text);
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: 99px;
  padding: 0.7rem 1.2rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease, transform 0.35s var(--ease-out);
  max-width: min(90vw, 560px);
  text-align: center;
}
.egg-toast.show { opacity: 1; transform: translate(-50%, 0); }
.egg-heart { cursor: pointer; display: inline-block; }
.egg-heart.beat { animation: heartbeat 0.5s var(--ease-out); }
@keyframes heartbeat {
  0% { transform: scale(1); }
  35% { transform: scale(1.5); }
  60% { transform: scale(0.9); }
  100% { transform: scale(1); }
}
.egg-spin { animation: eggspin 0.7s var(--ease-out); }
@keyframes eggspin { to { transform: rotate(360deg); } }
.marquee-track span.egg-hearts::after { content: '♥'; }
@media (prefers-reduced-motion: reduce) {
  .egg-spin { animation: none; }
}

/* Page curtain transition */
.page-curtain {
  position: fixed; inset: 0; z-index: 95;
  background: var(--bg-elev);
  transform: scaleY(0);
  transform-origin: top;
  pointer-events: none;
}

/* ---------- Micro-interactions ---------- */
/* 3D tilt for component specimens */
.fx-tilt { perspective: 900px; position: relative; }
.fx-tilt img {
  transform-style: preserve-3d;
  will-change: transform;
  transition: transform 0.4s var(--ease-out), box-shadow 0.4s ease;
}
.fx-tilt:hover img { box-shadow: 0 18px 44px rgba(0, 0, 0, 0.28); }
.fx-tilt.is-live img { transition: box-shadow 0.4s ease; }

/* Staggered fan on grouped screens */
.fx-fan figure { transition: transform 0.45s var(--ease-out); }
@media (hover: hover) {
  .fx-fan:hover figure:nth-child(1) { transform: rotate(-2deg) translateY(-8px); }
  .fx-fan:hover figure:nth-child(2) { transform: translateY(-16px); }
  .fx-fan:hover figure:nth-child(3) { transform: rotate(2deg) translateY(-8px); }
  /* Two-up fans tilt symmetrically instead of borrowing the three-up rhythm */
  .fx-fan.cols-2:hover figure:nth-child(1) { transform: rotate(-1.5deg) translateY(-10px); }
  .fx-fan.cols-2:hover figure:nth-child(2) { transform: rotate(1.5deg) translateY(-10px); }
}

/* Before/after comparison slider */
.ba-slider {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line-soft);
  background: var(--card);
  margin-top: var(--space-3);
  user-select: none;
}
.ba-slider img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top left;
  position: absolute;
  inset: 0;
}
.ba-slider .ba-frame { position: relative; width: 100%; aspect-ratio: 1440 / 758; }
.ba-slider .ba-after { clip-path: inset(0 0 0 var(--pos, 50%)); }
.ba-slider .ba-divider {
  position: absolute;
  top: 0; bottom: 0;
  left: var(--pos, 50%);
  width: 2px;
  background: var(--accent);
  pointer-events: none;
  z-index: 2;
}
.ba-slider .ba-divider::after {
  content: '⟷';
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 40px; height: 40px;
  border-radius: 50%;
  background: var(--accent);
  color: var(--accent-ink);
  display: grid; place-items: center;
  font-size: 1rem;
}
.ba-slider .ba-range {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  cursor: ew-resize;
  z-index: 3;
  margin: 0;
}
.ba-slider .ba-tag {
  position: absolute;
  top: 0.8rem;
  z-index: 2;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  font-weight: 500;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  padding: 0.3rem 0.6rem;
  border-radius: 3px;
  background: rgba(10, 11, 13, 0.62);
  color: #fff;
  pointer-events: none;
}
.ba-slider .ba-tag.before { left: 0.8rem; }
.ba-slider .ba-tag.after { right: 0.8rem; }

/* Show/Hide live toggle demo */
.fx-swap { margin-top: var(--space-3); }
.fx-swap .swap-stage {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line-soft);
  background: var(--card);
}
.fx-swap .swap-stage img { width: 100%; display: block; transition: opacity 0.45s ease; }
.fx-swap .swap-stage img.swap-b { position: absolute; inset: 0; height: 100%; object-fit: cover; object-position: top; opacity: 0; }
.fx-swap.on .swap-stage img.swap-b { opacity: 1; }
.fx-swap .swap-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.9rem;
  margin-top: 1rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.fx-swap .swap-bar .lbl.active { color: var(--text); }
.ui-toggle {
  width: 54px; height: 30px;
  border-radius: 99px;
  border: 1px solid var(--line);
  background: var(--bg-elev);
  position: relative;
  transition: background-color 0.3s ease, border-color 0.3s ease;
  flex-shrink: 0;
}
.ui-toggle::after {
  content: '';
  position: absolute;
  top: 3px; left: 3px;
  width: 22px; height: 22px;
  border-radius: 50%;
  background: var(--text-muted);
  transition: transform 0.3s var(--ease-out), background-color 0.3s ease;
}
.ui-toggle[aria-pressed='true'] { background: var(--accent); border-color: var(--accent); }
.ui-toggle[aria-pressed='true']::after { transform: translateX(24px); background: #fff; }

/* Filmstrip (auto-scrolling screens, pauses on hover) */
.filmstrip { overflow: hidden; margin-top: var(--space-3); }
.filmstrip-track {
  display: flex;
  gap: 1rem;
  width: max-content;
  animation: filmstrip 45s linear infinite;
}
.filmstrip:hover .filmstrip-track { animation-play-state: paused; }
.filmstrip-track img {
  height: clamp(240px, 32vw, 440px);
  width: auto;
  border-radius: var(--radius);
  border: 1px solid var(--line-soft);
  background: var(--card);
}
@keyframes filmstrip { to { transform: translateX(calc(-50% - 0.5rem)); } }
@media (prefers-reduced-motion: reduce) {
  .filmstrip { overflow-x: auto; }
  .filmstrip-track { animation: none; }
  .fx-fan:hover figure { transform: none; }
}

/* ---------- Type system: Plex Mono label layer ---------- */
.section-head .idx, .project-row .num, .cs-label .idx, .cs-rail a .idx,
.preloader .pre-count, .stat-band .stat span {
  font-family: var(--font-mono);
  font-weight: 500;
}
.meta-grid div dt, .foot-cols .foot-col-title, .foot-bottom, .pn-nav .pn-dir, .fig figcaption,
.project-row .p-tag, .persona-card .p-meta, .cs-rail a,
.menu-overlay a.menu-link small, .menu-overlay .menu-socials a {
  font-family: var(--font-mono);
  font-weight: 500;
}
.nav-links a {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.13em;
}
.btn {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.13em;
}
.cs-card .cs-card-link {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}
.device-toggle button, .screen-tabs button {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

/* ---------- Responsive header ---------- */
@media (max-width: 760px) {
  .nav-links { display: none; }
  .menu-btn { display: grid; }
}
@media (min-width: 761px) {
  .menu-overlay { display: none; }
}